Judging by their respect thread, the Testaments seem to be potent against physical foes.
While I have yet to see any implication of Sephiroth not being physical when he phase an object, I dare say he could use that move in his favor.
I do not know what non-physical moves Ganon has, though. When it comes to Arthas however, he can shift into the spiritual realm and work from there. He is by no means physical and according to the respect thread, the Testaments defy physical laws. They are at their prime against material things.
I dont know too much about Arthas, but Sephiroth dies here for sure. I will be inputting knowledge on Ganondorf.
Depending on if Ganondorf is nerfed or not steers the direction of this thread. Making Ganon's Triforce disappear is lulzy, seeing how he has the exact same ability to rip God-type powers out of others (WW), and should not even be mentioned.
Some of Ganon's non-physical attacks are:
- The Black Hole attack (the seeker-beams from OoT)
- Banishing to the gap between dimensions while using TK to hold the victim in place and burning him with soul-extinguishing fire from anywhere he chooses (OoT, Forest Temple Boss)
- Sealing the target in a crystal from which the only known escape is to incapacitate Ganondorf (obviously you cant while in the crystal)(OoT, Sheik transforming to Zelda scene)
- Traveling dimensions at will and attacking out of them (kind of like Janemba)(TP, Ganon fight)
-Teleport anywhere they want (even outside dimensions)
-Teleport people or things anywhere
-Disintegrate people and things (a Testament instantly destroyed a giant robot that was capable of destroying a star).
-Have godly durability. In fact, they can't be killed unless Wilhelm dies or being exposed something far beyond their control
-Can become intangible
-Use telekinesis
-In Kevin's case, he can manipulate and control fire.
Kevin robs Ganon of his Triforce of Power and does something that took generations of Links to accomplish: kill him permanently.
If Albedo can take away the Zohar, Kevin can take away the Triforce just as easily.
Ganondorf needed Zant to escape the Sacred Realm. All of the Testaments can escape easily. The Master Sword wouldn't even affect them as they can easily send it to another planet.
Ganondorf can and has become intangible (remember TP?).
Also, Ganondorf possesses cosmic awareness.
Dimensional travel is not going to help whenever Ganondorf sends Kevin to the GAP between dimensions.
The Sacred Realm is sealed by the Master Sword, so as long as its in the Pedastal of Time, no one is going anywhere. Lmao @ you're lack of facts and belief in fanfics.